Background:Inconsistent results have been reported in developed countries for relationships between sedentary behavior and cancer incidence and mortality,and evidence from the Chinese population is scarce.This study a...Background:Inconsistent results have been reported in developed countries for relationships between sedentary behavior and cancer incidence and mortality,and evidence from the Chinese population is scarce.This study aimed to investigate such relationships in large Chinese population-based prospective cohorts and to explore the joint effect and interaction of sedentary behavior and moderate-to-vigorous physical activity(MVPA)on these relationships.Methods:We included 95,319 Chinese adults without cancer from 3 large cohorts and assessed their sedentary behavior and physical activity with a unified questionnaire.Cancer incidence and mortality were confirmed by interviewing participants or their proxies and checking hospital records and death certificates.Hazard ratios(HRs)and 95%confidence intervals(95%CIs)for cancer and mortality were estimated using Cox proportional hazards regression models.Results:During 559,002 person-years of follow-up,2388 cancer events,1571 cancer deaths,and 4562 all-cause deaths were recorded.Sedentary behavior was associated with increased risk of developing cancer and deaths in a doseresponse manner.The multivariable-adjusted HRs(95%CIs)were the following:HR=1.16,95%CI:1.01-1.33;HR=1.24,95%CI:1.04-1.48;and HR=1.15,95%CI:1.04-1.28 for cancer incidence,cancer mortality,and all-cause mortality,respectively,for those having≥10 h/day of sedentary time compared with those having<6 h/day of sedentary time.Sedentary populations(≥10 h/day)developed cancer or died 4.09 years and 2.79 years earlier,respectively,at the index age of 50 years.Failure to achieve the recommended level of MVPA may further aggravate the adverse associations,with the highest cancer and mortality risks being observed among participants with both≥10 h/day of sedentary time and<150 min/week of MVPA.Limitations of this study include the fact that physical activity information was obtained via questionnaire instead of objective measurement and that there were insufficient incident cases for the analysis of associations between sedentary behavior and site-specific cancers.Conclusion:Sedentary behavior was associated with an increased risk of cancer and all-cause mortality among Chinese adults,especially for those with≥10 h/day of sedentary time.It is necessary to reduce sedentary time,in addition to increasing MVPA levels,for the prevention of cancer and premature death.展开更多
Objective Calcium Voltage-Gated Channel Subunit Alpha1 C(CACNA1C)gene encodes an alpha-1 subunit of a voltage-dependent calcium channel.This subunit forms the pore through which calcium ions pass into the cell and pla...Objective Calcium Voltage-Gated Channel Subunit Alpha1 C(CACNA1C)gene encodes an alpha-1 subunit of a voltage-dependent calcium channel.This subunit forms the pore through which calcium ions pass into the cell and plays an important role in regulating blood pressure.Smoking habit has been proven become the risk factor of hypertension.This study aimed to investigate the interaction of variants in CACNA1C gene with smoke in blood pressure(BP)responses to dietary sodium and potassium intervention.展开更多
Background:The trade-off between the benefits of regular physical activity(PA)and the potentially detrimental effects of augmented exposure to air pollution in highly polluted regions remains unclear.This study aimed ...Background:The trade-off between the benefits of regular physical activity(PA)and the potentially detrimental effects of augmented exposure to air pollution in highly polluted regions remains unclear.This study aimed to examine whether ambient fine particulate matter(PM_(2.5))exposure modified the impacts of PA volume and intensity on hypertension risk.Methods:We included 54,797 participants without hypertension at baseline in a nationwide cohort of the Prediction for Atherosclerotic Cardiovascular Disease Risk in China(China-PAR)project.PA volume and intensitywere assessed by questionnaire,and high-resolution(1 km×1 km)PM_(2.5)estimates were generated using a satellite-based model.Results:During 413,516 person-years of follow-up,12,100 incident hypertension cases were identified.PM_(2.5)significantly modified the relationship between PA and hypertension incidence(p_(interaction)<0.001).Increased PA volume was negatively associated with incident hypertension in the low PM_(2.5)stratum(<59.8μg/m^(3),ptrend<0.001),with a hazard ratio of 0.81(95%confidence interval(95%CI):0.74-0.88)when comparing the fourth with the first quartile of PA volume.However,the health benefits were not observed in the high PM_(2.5)stratum(≥59.8μg/m^(3),p_(trend)=0.370).Moreover,compared with light PA intensity,vigorous intensity was related to a 20%(95%CI:9%-29%)decreased risk of hypertension for participants exposed to low PM_(2.5),but a 17%(95%CI:4%-33%)increased risk for those with high PM_(2.5)levels.Conclusion:PA was associated with a reduced risk of hypertension only among participants with low PM_(2.5)exposure.Our findings recommended regular PA to prevent hypertension in less polluted regions and reinforced the importance of air quality improvement.展开更多
Background:Population-based epidemiological evidence regarding the association between fruit and vegetable intake and the incidence of hypertension is inconsistent.This prospective cohort study aimed to investigate th...Background:Population-based epidemiological evidence regarding the association between fruit and vegetable intake and the incidence of hypertension is inconsistent.This prospective cohort study aimed to investigate the association between fruit and vegetable intake and the risk of new-onset hypertension.Methods:Based on the project of Prediction for Atherosclerotic Cardiovascular Disease Risk in China(China-PAR),58,981 Chinese adults without hypertension at baseline were included.Information on fruit and vegetable intake was collected using a food-frequency questionnaire.Cox proportional hazards models were performed to estimate the hazard ratios(HRs)and 95%confidence intervals(CIs)of incident hypertension.Results:During 640,795 person-years of follow-up,21,008 new cases of hypertension were recorded.Compared with participants in the lowest quintile(Q1)of total fruit and vegetable(TFV)intake,the HRs(95%CIs)of incident hypertension were 0.90(0.86-0.95),0.85(0.81-0.90),0.82(0.78-0.86),and 0.83(0.78-0.88)for the Q2 to Q5 group(ptrend<0.001),respectively.In further analyses categorizing participants according to the recommended intake level(500 g/day),we found that increasing the intake of TFV,even though it was still insufficient for the recommendation,also had a protective effect against the incident hypertension.When considering the intake of fruit or vegetable separately,we found similar trends as the TFV intake.Conclusion:These results suggest that a higher intake of fruit and vegetable is beneficial for preventing hypertension in Chinese adults.展开更多
Existing evidence on the relationship between cardiovascular health(CVH) metrics and cardiovascular disease(CVD) was primarily derived from western populations. We aimed to evaluate the benefits of ideal CVH metrics o...Existing evidence on the relationship between cardiovascular health(CVH) metrics and cardiovascular disease(CVD) was primarily derived from western populations. We aimed to evaluate the benefits of ideal CVH metrics on preventing incident atherosclerotic CVD(ASCVD) in Chinese population. This study was conducted among 93,987 adults from the China-PAR project(Prediction for ASCVD Risk in China) who were followed up until 2015. Cox proportional hazard regression models were used to estimate the hazard ratios(HRs) and their corresponding 95% confidence intervals(CIs) of CVH metrics for the risk of ASCVD, including coronary heart disease(CHD), stroke and ASCVD death. We further estimated the population-attributable risk percentage(PAR%) of these metrics in relation to each outcome. We observed gradient inverse associations between the number of ideal CVH metrics and ASCVD incidence. Compared with participants having ≤2 ideal CVH metrics, the multivariable-adjusted HRs(95% CIs) of ASCVD for those with 3, 4, 5, 6 and 7 ideal CVH metrics were 0.83(0.74–0.93), 0.66(0.59–0.74), 0.55(0.48–0.61), 0.44(0.38–0.50) and 0.24(0.18–0.31), respectively(P for trend <0.0001). Approximately 62.1% of total ASCVD, 38.7% of CHD, 66.4% of stroke, and 60.5% of ASCVD death were attributable to not achieving all the seven ideal CVH metrics. After adjusting effects of ideal health factors, having four ideal health behaviors could independently bring adults health benefits in preventing 17.4% of ASCVD, 18.0% of CHD, 16.7% of stroke, and 10.1% of ASCVD death. Among all the seven CVH metrics, to keep with ideal blood pressure(BP) implied the largest public health gains against various ASCVD events(PAR% between 33.0% and 47.2%), while ideal diet was the metric most difficult to be achieved in the long term. Our study indicates that the more ideal CVH metrics adults have, the less ASCVD burden there is in China. Special efforts of health education and behavior modification should be made on keeping ideal BP and dietary habits in general Chinese population to prevent the epidemic of ASCVD.展开更多
Evidence on the lifetime risk for atherosclerotic cardiovascular disease(ASCVD) is insufficient;yet,estimating an individual's lifetime risk allows for a comprehensive assessment of ASCVD burden.We developed and v...Evidence on the lifetime risk for atherosclerotic cardiovascular disease(ASCVD) is insufficient;yet,estimating an individual's lifetime risk allows for a comprehensive assessment of ASCVD burden.We developed and validated lifetime risk prediction equations for ASCVD using four large and ongoing prospective cohorts of Chinese,the China-PAR project(Prediction for ASCVD Risk in China).Sexspecific equations were developed using two cohorts(as the derivation cohort) of 21,320 participants.Two other independent cohorts with 14,123 and 70,838 participants were used for their external validation,respectively.We evaluated both calibration and discrimination measures for model performance.Furthermore,we estimated ASCVD-free years lost or excess absolute risk attributable to high 10-year risk(!10.0%) and/or high lifetime risk(!32.8%).After 12.3 years' follow-up of the derivation cohort,1048 ASCVD events and 1304 non-ASCVD deaths were identified.Our sex-specific equations had good internal validation,with discriminant C statistics of 0.776(95% confidence interval [CI]:0.757–0.794) and 0.801(95% CI:0.778–0.825),and calibration χ~2 of 9.2(P = 0.418) and 5.6(P = 0.777) for men and women,respectively.Good external validation was also demonstrated with predicted rates closely matched to the observed ones.Compared with men having both low 10-year and low lifetime risk,men would develop ASCVD 3.0,4.6 and 8.6 years earlier if they had high 10-year risk alone,high lifetime risk alone,or both high 10-year and high lifetime risk at the index age of 35 years,respectively.We developed wellperformed lifetime risk prediction equations that will help to identify those with the greatest potential to avert ASCVD burden after implementation of innovative clinical and public health interventions in China.展开更多
Evidence about the response patterns of fruit and vegetable consumption with the risk of cardiovascular disease(CVD)and allcause mortality was inconsistent.These associations were examined using a large-scale,populati...Evidence about the response patterns of fruit and vegetable consumption with the risk of cardiovascular disease(CVD)and allcause mortality was inconsistent.These associations were examined using a large-scale,population-based Chinese cohort comprising 100,728 participants.A food-frequency questionnaire was used to assess fruit and vegetable consumption.Outcomes were ascertained by interviewing individuals or their proxies and checking hospital records or death certificates.Cox proportional hazards regression was used to calculate hazard ratios(HRs)with 95% confidence intervals(CIs).At the 736,668 person-years of follow-up,3,677 CVD cases and 5,466 deaths were identified.The multivariable-adjusted HRs for CVD across increasing quartiles of total fruit and vegetable consumption were 1(reference),0.94(95%CI=0.85-1.04),0.89(95%CI=0.80-0.98),and 0.85(95%CI=0.77-0.95).Moreover,participants in the highest quartile displayed a 13% lower risk of all-cause mortality(HR=0.87;95%CI=0.80-0.95).A nonlinear dose-response relation was found for CVD,without additional benefits beyond a consumption of600 g d-1,whereas the all-cause mortality risk decreased along with higher consumption,with a linear trend.These associations remained significant for fruit consumption but not for vegetable consumption.Our findings indicated that greater fruit and vegetable consumption was significantly associated with a lower risk of CVD and all-cause mortality.Increasing fruit and vegetable consumption,especially fruit,in the general population would prevent CVD and premature mortality.展开更多
Eggs are nutrient-dense while also loaded with abundant cholesterol, thus making the public hesitant about their consumption.We conducted the study to investigate if egg consumption is associated with incident cardiov...Eggs are nutrient-dense while also loaded with abundant cholesterol, thus making the public hesitant about their consumption.We conducted the study to investigate if egg consumption is associated with incident cardiovascular disease(CVD) and all-cause mortality. Using the project of Prediction for Atherosclerotic Cardiovascular Disease Risk in China, we included 102,136 adults free of CVD and assessed their egg consumption with food-frequency questionnaires. CVD endpoints and all-cause mortality were confirmed during follow-ups by interviewing participants or their proxies and checking hospital records/death certificates.The HRs(95% CIs) were calculated using the cohort-stratified Cox regression models. During 777,163 person-years of followup, we identified 4,848 incident CVD and 5,511 deaths. U-shaped associations of egg consumption with incident CVD and allcause mortality were observed. Compared with consumption of 3–<6/week, the multivariable-adjusted HRs(95% CIs) of <1/week and ≥10/week for incident CVD were 1.22(1.11 to 1.35) and 1.39(1.28 to 1.52), respectively. The corresponding HRs(95% CIs) for all-cause mortality were 1.29(1.18 to 1.41) and 1.13(1.04 to 1.24). Our findings identified that both low and high consumption were associated with increased risk of incident CVD and all-cause mortality, highlighting that moderate egg consumption of 3–<6/week should be recommended for CVD prevention in China.展开更多
ZnOeAl2O3eB2O3eSiO2(ZABS)glass powder was used as interlayer to join alumina ceramics.The effect of joining temperature on the microstructure and strength of joints was investigated.The results showed that the ZABS gl...ZnOeAl2O3eB2O3eSiO2(ZABS)glass powder was used as interlayer to join alumina ceramics.The effect of joining temperature on the microstructure and strength of joints was investigated.The results showed that the ZABS glass can react with alumina substrate to form a layer of ZnAl2O4at Al2O3/glass interface.Bending test exhibited that low joining temperature(1150 C)led to low joint strength due to the formation of pores in the interlayer,originated by high viscosity of the glass.High joining temperature(1250 C)also resulted in low joint strength,because of large CTE(coefficient of thermal expansion)mismatch between amorphous interlayer and alumina substrate.Therefore,only when the joining temperature was appropriate(1200 C),defect-free interface and high joint strength can be obtained.The optimum joint strength reached 285 MPa,which was the same as the base material strength.展开更多
Ferroelectric barium strontium titanate(BST) glasse ceramics doped with different content of La2O3 were prepared via the melt-quenching technique followed by controlled crystallization. The microstructures of crystall...Ferroelectric barium strontium titanate(BST) glasse ceramics doped with different content of La2O3 were prepared via the melt-quenching technique followed by controlled crystallization. The microstructures of crystallized samples were examined by X-ray diffraction and scanning electron microscopy. Dielectric properties were also investigated. The aliovalent substitution of Ba by La induced dispersion of semiconducting BaxSr1-x TiO3 crystallites sealed in a glassy silicate matrix, which increased the εr and loss tangent values of the BST glasse ceramic. The experimental results indicate that aliovalent substitution is an effective method to process glasse ceramics with better dielectric properties.展开更多
Background:High sodium intake is an important risk factor for hypertension and cardiovascular disease.However,the association between gut microbiota composition and metabolomic profiles with dietary sodium intake and ...Background:High sodium intake is an important risk factor for hypertension and cardiovascular disease.However,the association between gut microbiota composition and metabolomic profiles with dietary sodium intake and blood pressure(BP)is not well-understood.The metabolome,microbiome,and dietary salt intervention(MetaSalt)study aimed to investigate microbial and metabolomic profiles related to dietary sodium intake and BP regulation.Methods:This family-based intervention study was conducted in four communities across three provinces in rural northern China in 2019.Probands with untreated prehypertension or stage-1 hypertension were identified through community-based BP screening,and family members including siblings,offspring,spouses,and parents were subsequently included.All participants participated in a 3-day baseline examination with usual diet consumption,followed by a 10-day low-salt diet(3 g/d of salt or 51.3 mmol/d of sodium)and a 10-day high-salt diet(18 g/d of salt or 307.8 mmol/d of sodium).Differences in mean BP levels were compared according to the intervention phases using a paired Student’s t-test.Results:A total of 528 participants were included in this study,with a mean age of 48.1 years,36.7%of whom were male,76.8%had a middle school(69.7%)or higher(7.1%)diploma,23.4%had a history of smoking,and 24.4%were current drinkers.The mean arterial pressure at baseline was 97.2±10.5 mm Hg for all participants,and significantly decreased during the low-salt intervention(93.8±9.3,P<0.0001)and subsequently increased during the high-salt intervention(96.4±10.0,P<0.0001).Conclusions:Our dietary salt intervention study has successfully recruited participants and will facilitate to evaluate the effects of gut microbiota and metabolites on BP regulation in response to sodium burden,which will provide important evidence for investigating the underlying mechanisms in the development of hypertension and subsequent cardiovascular diseases.Trial registration:The study was registered in the Chinese Clinical Trial Registry database(ChiCTR1900025171).展开更多
To the Editor:According to guidelines from western countries as well as China,dietary patterns with low intake of cholesterol have been widely recommended for maintaining ideal lipid levels.As one of the major sources...To the Editor:According to guidelines from western countries as well as China,dietary patterns with low intake of cholesterol have been widely recommended for maintaining ideal lipid levels.As one of the major sources of both high-quality protein and dietary cholesterol,eggs have always been the focus in terms of diet.Although increased lipid levels induced by high egg intake have been revealed by randomized controlled trials(RCTs),they may not be sufficient to reflect the impacts of habitual egg intake due to high doses of egg intake of more than 7 eggs/week or even 14 eggs/week.Further,RCTs typically have shorter intervention periods of about 3 months,which may not observe a stable association due to homeostasis in cholesterol metabolism of human beings.[1,2]Up to now,only three cohorts assessed the associations of egg intake with lipid levels or dyslipidemia,and the findings were still controversial.One recent cohort study has reported the non-significant association between higher egg intake(≥7 vs.1 eggs/week)and lipid profiles.On the other hand,another cohort from Spain found that compared with<1 egg/week,>4 eggs/week had no significant influence on total cholesterol(TC)and triglyceride(TG),but significantly decreased high-density lipoprotein cholesterol(HDL-C)levels.[4]However,none of these cohorts were from developing countries,and the association between moderate egg intake and lipid profiles has not been well illustrated.Egg consumption in China,a representative of developing countries,is relatively higher,and it may be possible to better explore the appropriate range of egg intake.展开更多
基金supported by the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(2019-I2M-2-003,2017-I2M-1-004)National Key R&D Program of China(2017YFC0211700,2018YFE0115300)the National Natural Science Foundation of China(91643208).
文摘Background:Inconsistent results have been reported in developed countries for relationships between sedentary behavior and cancer incidence and mortality,and evidence from the Chinese population is scarce.This study aimed to investigate such relationships in large Chinese population-based prospective cohorts and to explore the joint effect and interaction of sedentary behavior and moderate-to-vigorous physical activity(MVPA)on these relationships.Methods:We included 95,319 Chinese adults without cancer from 3 large cohorts and assessed their sedentary behavior and physical activity with a unified questionnaire.Cancer incidence and mortality were confirmed by interviewing participants or their proxies and checking hospital records and death certificates.Hazard ratios(HRs)and 95%confidence intervals(95%CIs)for cancer and mortality were estimated using Cox proportional hazards regression models.Results:During 559,002 person-years of follow-up,2388 cancer events,1571 cancer deaths,and 4562 all-cause deaths were recorded.Sedentary behavior was associated with increased risk of developing cancer and deaths in a doseresponse manner.The multivariable-adjusted HRs(95%CIs)were the following:HR=1.16,95%CI:1.01-1.33;HR=1.24,95%CI:1.04-1.48;and HR=1.15,95%CI:1.04-1.28 for cancer incidence,cancer mortality,and all-cause mortality,respectively,for those having≥10 h/day of sedentary time compared with those having<6 h/day of sedentary time.Sedentary populations(≥10 h/day)developed cancer or died 4.09 years and 2.79 years earlier,respectively,at the index age of 50 years.Failure to achieve the recommended level of MVPA may further aggravate the adverse associations,with the highest cancer and mortality risks being observed among participants with both≥10 h/day of sedentary time and<150 min/week of MVPA.Limitations of this study include the fact that physical activity information was obtained via questionnaire instead of objective measurement and that there were insufficient incident cases for the analysis of associations between sedentary behavior and site-specific cancers.Conclusion:Sedentary behavior was associated with an increased risk of cancer and all-cause mortality among Chinese adults,especially for those with≥10 h/day of sedentary time.It is necessary to reduce sedentary time,in addition to increasing MVPA levels,for the prevention of cancer and premature death.
文摘Objective Calcium Voltage-Gated Channel Subunit Alpha1 C(CACNA1C)gene encodes an alpha-1 subunit of a voltage-dependent calcium channel.This subunit forms the pore through which calcium ions pass into the cell and plays an important role in regulating blood pressure.Smoking habit has been proven become the risk factor of hypertension.This study aimed to investigate the interaction of variants in CACNA1C gene with smoke in blood pressure(BP)responses to dietary sodium and potassium intervention.
基金supported by the National Key Research and Development Program of China(2018YFE0115300 and 2017YFC0211703)the National Natural Science Foundation of China(91643208,82073658,and 91843302)+3 种基金the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(2021-I2M-1-010,2017-I2M-1-004,and 2019-I2M-2-003)Research Unit of Prospective Cohort of Cardiovascular Diseases and Cancers,Chinese Academy of Medical Sciences(2019RU038)the China Medical Board(15-220)supported by the National Institute of Environmental Health Sciences of the National Institutes of Health(Award#1R01ES032140).
文摘Background:The trade-off between the benefits of regular physical activity(PA)and the potentially detrimental effects of augmented exposure to air pollution in highly polluted regions remains unclear.This study aimed to examine whether ambient fine particulate matter(PM_(2.5))exposure modified the impacts of PA volume and intensity on hypertension risk.Methods:We included 54,797 participants without hypertension at baseline in a nationwide cohort of the Prediction for Atherosclerotic Cardiovascular Disease Risk in China(China-PAR)project.PA volume and intensitywere assessed by questionnaire,and high-resolution(1 km×1 km)PM_(2.5)estimates were generated using a satellite-based model.Results:During 413,516 person-years of follow-up,12,100 incident hypertension cases were identified.PM_(2.5)significantly modified the relationship between PA and hypertension incidence(p_(interaction)<0.001).Increased PA volume was negatively associated with incident hypertension in the low PM_(2.5)stratum(<59.8μg/m^(3),ptrend<0.001),with a hazard ratio of 0.81(95%confidence interval(95%CI):0.74-0.88)when comparing the fourth with the first quartile of PA volume.However,the health benefits were not observed in the high PM_(2.5)stratum(≥59.8μg/m^(3),p_(trend)=0.370).Moreover,compared with light PA intensity,vigorous intensity was related to a 20%(95%CI:9%-29%)decreased risk of hypertension for participants exposed to low PM_(2.5),but a 17%(95%CI:4%-33%)increased risk for those with high PM_(2.5)levels.Conclusion:PA was associated with a reduced risk of hypertension only among participants with low PM_(2.5)exposure.Our findings recommended regular PA to prevent hypertension in less polluted regions and reinforced the importance of air quality improvement.
基金Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(Grant/Award Number: 2021-I2M-1-010)National Key Research and Development Program of China(Grant/Award Number: 2018YFE0115300)+2 种基金National Natural Science Foundation of China(Grant/Award Numbers: 82030102, 82070473)National High Level Hospital Clinical Research Funding(Grant/Award Numbers: 2022-GSP-GG-1, 2022-GSP-GG-2)National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences(Grant/Award Number: NCRC2020006).
文摘Background:Population-based epidemiological evidence regarding the association between fruit and vegetable intake and the incidence of hypertension is inconsistent.This prospective cohort study aimed to investigate the association between fruit and vegetable intake and the risk of new-onset hypertension.Methods:Based on the project of Prediction for Atherosclerotic Cardiovascular Disease Risk in China(China-PAR),58,981 Chinese adults without hypertension at baseline were included.Information on fruit and vegetable intake was collected using a food-frequency questionnaire.Cox proportional hazards models were performed to estimate the hazard ratios(HRs)and 95%confidence intervals(CIs)of incident hypertension.Results:During 640,795 person-years of follow-up,21,008 new cases of hypertension were recorded.Compared with participants in the lowest quintile(Q1)of total fruit and vegetable(TFV)intake,the HRs(95%CIs)of incident hypertension were 0.90(0.86-0.95),0.85(0.81-0.90),0.82(0.78-0.86),and 0.83(0.78-0.88)for the Q2 to Q5 group(ptrend<0.001),respectively.In further analyses categorizing participants according to the recommended intake level(500 g/day),we found that increasing the intake of TFV,even though it was still insufficient for the recommendation,also had a protective effect against the incident hypertension.When considering the intake of fruit or vegetable separately,we found similar trends as the TFV intake.Conclusion:These results suggest that a higher intake of fruit and vegetable is beneficial for preventing hypertension in Chinese adults.
基金supported by grants from the CAMS Innovation Fund for Medical Sciences (2017-12M-1-004)Ministry of Science and Technology of China (2017YFC0211700)National Natural Science Foundation of China (91643208)
文摘Existing evidence on the relationship between cardiovascular health(CVH) metrics and cardiovascular disease(CVD) was primarily derived from western populations. We aimed to evaluate the benefits of ideal CVH metrics on preventing incident atherosclerotic CVD(ASCVD) in Chinese population. This study was conducted among 93,987 adults from the China-PAR project(Prediction for ASCVD Risk in China) who were followed up until 2015. Cox proportional hazard regression models were used to estimate the hazard ratios(HRs) and their corresponding 95% confidence intervals(CIs) of CVH metrics for the risk of ASCVD, including coronary heart disease(CHD), stroke and ASCVD death. We further estimated the population-attributable risk percentage(PAR%) of these metrics in relation to each outcome. We observed gradient inverse associations between the number of ideal CVH metrics and ASCVD incidence. Compared with participants having ≤2 ideal CVH metrics, the multivariable-adjusted HRs(95% CIs) of ASCVD for those with 3, 4, 5, 6 and 7 ideal CVH metrics were 0.83(0.74–0.93), 0.66(0.59–0.74), 0.55(0.48–0.61), 0.44(0.38–0.50) and 0.24(0.18–0.31), respectively(P for trend <0.0001). Approximately 62.1% of total ASCVD, 38.7% of CHD, 66.4% of stroke, and 60.5% of ASCVD death were attributable to not achieving all the seven ideal CVH metrics. After adjusting effects of ideal health factors, having four ideal health behaviors could independently bring adults health benefits in preventing 17.4% of ASCVD, 18.0% of CHD, 16.7% of stroke, and 10.1% of ASCVD death. Among all the seven CVH metrics, to keep with ideal blood pressure(BP) implied the largest public health gains against various ASCVD events(PAR% between 33.0% and 47.2%), while ideal diet was the metric most difficult to be achieved in the long term. Our study indicates that the more ideal CVH metrics adults have, the less ASCVD burden there is in China. Special efforts of health education and behavior modification should be made on keeping ideal BP and dietary habits in general Chinese population to prevent the epidemic of ASCVD.
基金supported by the CAMS Innovation Fund for Medical Sciences(2017-I2M-1-004)the Ministry of Science and Technology of China(2017YFC0211700,2011BAI11B03,2011BAI09B03,and 2006BAI01A01)the National Natural Science Foundation of China(91643208)
文摘Evidence on the lifetime risk for atherosclerotic cardiovascular disease(ASCVD) is insufficient;yet,estimating an individual's lifetime risk allows for a comprehensive assessment of ASCVD burden.We developed and validated lifetime risk prediction equations for ASCVD using four large and ongoing prospective cohorts of Chinese,the China-PAR project(Prediction for ASCVD Risk in China).Sexspecific equations were developed using two cohorts(as the derivation cohort) of 21,320 participants.Two other independent cohorts with 14,123 and 70,838 participants were used for their external validation,respectively.We evaluated both calibration and discrimination measures for model performance.Furthermore,we estimated ASCVD-free years lost or excess absolute risk attributable to high 10-year risk(!10.0%) and/or high lifetime risk(!32.8%).After 12.3 years' follow-up of the derivation cohort,1048 ASCVD events and 1304 non-ASCVD deaths were identified.Our sex-specific equations had good internal validation,with discriminant C statistics of 0.776(95% confidence interval [CI]:0.757–0.794) and 0.801(95% CI:0.778–0.825),and calibration χ~2 of 9.2(P = 0.418) and 5.6(P = 0.777) for men and women,respectively.Good external validation was also demonstrated with predicted rates closely matched to the observed ones.Compared with men having both low 10-year and low lifetime risk,men would develop ASCVD 3.0,4.6 and 8.6 years earlier if they had high 10-year risk alone,high lifetime risk alone,or both high 10-year and high lifetime risk at the index age of 35 years,respectively.We developed wellperformed lifetime risk prediction equations that will help to identify those with the greatest potential to avert ASCVD burden after implementation of innovative clinical and public health interventions in China.
基金supported by the Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Sciences (2019-I2M-2-003, 2017-I2M-1-004)National Key R&D Program of China (2017YFC0211700 and 2018YFE0115300)the National Natural Science Foundation of China (91643208)。
基金supported by the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(2017-I2M-1-004,2019-I2M-2-003)National Key Research and Development Program of China(2017YFC0211700,2018YFE0115300)the National Natural Science Foundation of China(91643208)。
文摘Evidence about the response patterns of fruit and vegetable consumption with the risk of cardiovascular disease(CVD)and allcause mortality was inconsistent.These associations were examined using a large-scale,population-based Chinese cohort comprising 100,728 participants.A food-frequency questionnaire was used to assess fruit and vegetable consumption.Outcomes were ascertained by interviewing individuals or their proxies and checking hospital records or death certificates.Cox proportional hazards regression was used to calculate hazard ratios(HRs)with 95% confidence intervals(CIs).At the 736,668 person-years of follow-up,3,677 CVD cases and 5,466 deaths were identified.The multivariable-adjusted HRs for CVD across increasing quartiles of total fruit and vegetable consumption were 1(reference),0.94(95%CI=0.85-1.04),0.89(95%CI=0.80-0.98),and 0.85(95%CI=0.77-0.95).Moreover,participants in the highest quartile displayed a 13% lower risk of all-cause mortality(HR=0.87;95%CI=0.80-0.95).A nonlinear dose-response relation was found for CVD,without additional benefits beyond a consumption of600 g d-1,whereas the all-cause mortality risk decreased along with higher consumption,with a linear trend.These associations remained significant for fruit consumption but not for vegetable consumption.Our findings indicated that greater fruit and vegetable consumption was significantly associated with a lower risk of CVD and all-cause mortality.Increasing fruit and vegetable consumption,especially fruit,in the general population would prevent CVD and premature mortality.
基金supported by the Chinese Academy of Medical Sciences(CAMS)Innovation Fund for Medical Sciences(2019-I2M-2-003and 2017-I2M-1-004)National Key Research&Development Program of China(2017YFC0211700 and 2018YFE0115300)the National Natural Science Foundation of China(91643208)。
文摘Eggs are nutrient-dense while also loaded with abundant cholesterol, thus making the public hesitant about their consumption.We conducted the study to investigate if egg consumption is associated with incident cardiovascular disease(CVD) and all-cause mortality. Using the project of Prediction for Atherosclerotic Cardiovascular Disease Risk in China, we included 102,136 adults free of CVD and assessed their egg consumption with food-frequency questionnaires. CVD endpoints and all-cause mortality were confirmed during follow-ups by interviewing participants or their proxies and checking hospital records/death certificates.The HRs(95% CIs) were calculated using the cohort-stratified Cox regression models. During 777,163 person-years of followup, we identified 4,848 incident CVD and 5,511 deaths. U-shaped associations of egg consumption with incident CVD and allcause mortality were observed. Compared with consumption of 3–<6/week, the multivariable-adjusted HRs(95% CIs) of <1/week and ≥10/week for incident CVD were 1.22(1.11 to 1.35) and 1.39(1.28 to 1.52), respectively. The corresponding HRs(95% CIs) for all-cause mortality were 1.29(1.18 to 1.41) and 1.13(1.04 to 1.24). Our findings identified that both low and high consumption were associated with increased risk of incident CVD and all-cause mortality, highlighting that moderate egg consumption of 3–<6/week should be recommended for CVD prevention in China.
基金the European Commission for financial support within framework FP7 for the CACHET 2 project(No.241342)
文摘ZnOeAl2O3eB2O3eSiO2(ZABS)glass powder was used as interlayer to join alumina ceramics.The effect of joining temperature on the microstructure and strength of joints was investigated.The results showed that the ZABS glass can react with alumina substrate to form a layer of ZnAl2O4at Al2O3/glass interface.Bending test exhibited that low joining temperature(1150 C)led to low joint strength due to the formation of pores in the interlayer,originated by high viscosity of the glass.High joining temperature(1250 C)also resulted in low joint strength,because of large CTE(coefficient of thermal expansion)mismatch between amorphous interlayer and alumina substrate.Therefore,only when the joining temperature was appropriate(1200 C),defect-free interface and high joint strength can be obtained.The optimum joint strength reached 285 MPa,which was the same as the base material strength.
基金Financial supports from the National Natural Science Foundation of China (No. 50902082)the State Key Laboratory of Electrical Insulation and Power Equipment (EIPE11208) are gratefully acknowledged
文摘Ferroelectric barium strontium titanate(BST) glasse ceramics doped with different content of La2O3 were prepared via the melt-quenching technique followed by controlled crystallization. The microstructures of crystallized samples were examined by X-ray diffraction and scanning electron microscopy. Dielectric properties were also investigated. The aliovalent substitution of Ba by La induced dispersion of semiconducting BaxSr1-x TiO3 crystallites sealed in a glassy silicate matrix, which increased the εr and loss tangent values of the BST glasse ceramic. The experimental results indicate that aliovalent substitution is an effective method to process glasse ceramics with better dielectric properties.
基金supported by grants from the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences(2019-I2M-2-003,2017-I2M-1-004)。
文摘Background:High sodium intake is an important risk factor for hypertension and cardiovascular disease.However,the association between gut microbiota composition and metabolomic profiles with dietary sodium intake and blood pressure(BP)is not well-understood.The metabolome,microbiome,and dietary salt intervention(MetaSalt)study aimed to investigate microbial and metabolomic profiles related to dietary sodium intake and BP regulation.Methods:This family-based intervention study was conducted in four communities across three provinces in rural northern China in 2019.Probands with untreated prehypertension or stage-1 hypertension were identified through community-based BP screening,and family members including siblings,offspring,spouses,and parents were subsequently included.All participants participated in a 3-day baseline examination with usual diet consumption,followed by a 10-day low-salt diet(3 g/d of salt or 51.3 mmol/d of sodium)and a 10-day high-salt diet(18 g/d of salt or 307.8 mmol/d of sodium).Differences in mean BP levels were compared according to the intervention phases using a paired Student’s t-test.Results:A total of 528 participants were included in this study,with a mean age of 48.1 years,36.7%of whom were male,76.8%had a middle school(69.7%)or higher(7.1%)diploma,23.4%had a history of smoking,and 24.4%were current drinkers.The mean arterial pressure at baseline was 97.2±10.5 mm Hg for all participants,and significantly decreased during the low-salt intervention(93.8±9.3,P<0.0001)and subsequently increased during the high-salt intervention(96.4±10.0,P<0.0001).Conclusions:Our dietary salt intervention study has successfully recruited participants and will facilitate to evaluate the effects of gut microbiota and metabolites on BP regulation in response to sodium burden,which will provide important evidence for investigating the underlying mechanisms in the development of hypertension and subsequent cardiovascular diseases.Trial registration:The study was registered in the Chinese Clinical Trial Registry database(ChiCTR1900025171).
基金supported by grants from the Chinese Academy of Medical Science Innovation Fund for Medical Sciences(Nos.2017-I2M-1-004,2019-I2M-2-003)the National Key Research and Development Program of China(Nos.2017YFC0211703,2018YFE0115300)the National Natural Science Foundation of China(No.91643208)。
文摘To the Editor:According to guidelines from western countries as well as China,dietary patterns with low intake of cholesterol have been widely recommended for maintaining ideal lipid levels.As one of the major sources of both high-quality protein and dietary cholesterol,eggs have always been the focus in terms of diet.Although increased lipid levels induced by high egg intake have been revealed by randomized controlled trials(RCTs),they may not be sufficient to reflect the impacts of habitual egg intake due to high doses of egg intake of more than 7 eggs/week or even 14 eggs/week.Further,RCTs typically have shorter intervention periods of about 3 months,which may not observe a stable association due to homeostasis in cholesterol metabolism of human beings.[1,2]Up to now,only three cohorts assessed the associations of egg intake with lipid levels or dyslipidemia,and the findings were still controversial.One recent cohort study has reported the non-significant association between higher egg intake(≥7 vs.1 eggs/week)and lipid profiles.On the other hand,another cohort from Spain found that compared with<1 egg/week,>4 eggs/week had no significant influence on total cholesterol(TC)and triglyceride(TG),but significantly decreased high-density lipoprotein cholesterol(HDL-C)levels.[4]However,none of these cohorts were from developing countries,and the association between moderate egg intake and lipid profiles has not been well illustrated.Egg consumption in China,a representative of developing countries,is relatively higher,and it may be possible to better explore the appropriate range of egg intake.
